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Method for a smart wall wart

Publishing Venue

Abstract

Disclosed is a method for a smart wall wart. Benefits include improved functionality and improved useability.

Country

United States

Language

English (United States)

This text was extracted from a Microsoft Word document.

At least one non-text object (such as an image or picture) has been suppressed.

This is the abbreviated version, containing approximately
50% of the total text.

Method for a smart wall wart

Disclosed is a method for a smart wall wart. Benefits include improved functionality and improved
useability.

Background

� � � � � Off-the-shelf
configurable power packs are not automatic. The device does not automatically
set the voltage and polarity required to operate the consumer electronic (CE)
device. Most people with a variety of CE devices in their home have many of
these power packs and have a difficult time matching the power pack to the
device it powers (see Figure 1).

� � � � � Vcore VID is a
related concept. A processor’s voltage is configured by a setting of five pins
interpreted by the voltage regulators on the motherboard. This approach differs
in many respects from the disclosure:

• � � � � VID uses five
dedicated pins to set a voltage from a table. By comparison, the SWW has only
two connections, power and ground, where VID requires at least seven
connections to accomplish a more limited function.

• � � � � Other power supplies
self-regulate, but they are managed by dynamic adjustment in response to a
feedback line that is in addition to the 2-pole power supply lines (+/-). The
disclosed method is not dynamic and requires no additional lines.

Description

� � � � � The disclosed method
is a smart wall wart (SWW). It is an enhanced version of the transformer-based
power supplies that provide power to consumer devices such as PDAs, cell
phones, and answering machines (see Figure 2). Regardless of its power
requirements, a device designed for compatibility with an SWW would be able to
use any off-the-shelf unit without requiring any user configuration. Power
configuration is automatic when the SWW is plugged into any compatible device.

� � � � � The connection
between a device and a power supply (PS) is a standard 2-pole connection (+/-).
It may use a standard 2-pole connector. (Several varieties are in use today.)
The device and the SWW are each equipped with a low-voltage smart circuit
(LVSC) that includes modulation/demodulation circuitry to serially send
messages across the...